Center portion of a brush



FIG. 1 is an isometric view of a center portion of a bristle brush;

FIG. 2 is a right side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is an enlarged isometric view of a portion thereof.

The left side view is identical to the right side view.

The broken lines in the drawings are for illustrative purposes only andform no part of the claimed design.

The ornamental design for a center portion of a brush, as shown anddescribed.